判空

cash-common/cash-common-api-config/src/main/java/com/czg/config/CorsFilter.java

@@ -9,6 +9,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Configuration;
 
 import java.io.IOException;
+import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -24,6 +25,9 @@ public class CorsFilter implements Filter {
             throws IOException, ServletException {
         // traceId
         Map<String, String> copyOfContextMap = MDC.getCopyOfContextMap();
+        if(copyOfContextMap == null){
+            copyOfContextMap = new HashMap<>();
+        }
         copyOfContextMap.put("traceId",applicationName + IdUtil.getSnowflakeNextId());
         MDC.setContextMap(copyOfContextMap);
         HttpServletResponse response = (HttpServletResponse) resp;